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hot air rising cooling and falling :a hot air balloonboiled water or boiling waterhot air popper
From Wikipedia.org: In 1978 Presto introduced the Popcorn Pumper, a popper for consumer use in the home, which used hot air blown up through the kernals. By cooking without oil, it reduced the calories and fat in the finished product. It was also faster and easier than pan-fry popping.
by transfer of heat by the movement of air ,gases or heated liquid between areas of unequal density,upward flow of warm air
Consumerresearch.com rates the Presto Poplite Hot Air Corn Popper highest. It is available for $20 at Walmart.com. Second is the Whirley Pop Popcorn Popper, which is available at www.amazon.com for $35.
A cheap popcorn machine is a counter top hot air popper, those can go for 30-40$ on line or in accessories shops. If you prefer a big popcorn popper, you might want to save a little more, because those aren't cheap, in fact, they usually sell for around 200$ and more.
First you buy a hot air popcorn machine. Pour dry kernels in the top and put the lid on. Put a bowl in front of the spout. Plug it in. When all the corn is in the bowl, unplug the popper.
Popcorn popped in an air popper as opposed to microwave or stovetop.
The hot air inside the popper heats up moisture inside the kernel of popcorn and it explodes, creating popcorn.
its hot because that makes it lighter so it can float above air.
its hot because that makes it lighter so it can float above air.
Hot air makes a hot air balloon rise because hot air is less dense than the cooler air around it, so the hot air balloon floats on the cooler air around it.
Hot air rises and cools as it does so.